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R Non-Modular Terminal Block - Shunt Installation R Figure 006

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R Non-Modular Terminal Block - Terminal Installation R Figure 007

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R Non-Modular Terminal Blocks - Connection Table R Figure 008

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 ___________________________________________
GROUNDING ITEMS - DESCRIPTION AND OPERATION
 _______
1.
 General The chapter that follows concerns the description, installation and identification of different grounding items used on aircraft.

 ______________________________________

2.
 Structure of the Chapter that Follows:

 A. Grounding Module (Ref. 20-44-71)

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 ____________________________________________
GROUNDING MODULE - DESCRIPTION AND OPERATION
 _______1. General
 Grounding modules installed on aircraft have the following codes: - E0425 grounding module installed on structure. - NSA937916 grounding module installed on support.
 _____2. E0425
R R R R R  A. P/N Identification (Ref. Fig. 001) E0425 A 20 01 | | | | | | | ------------------Arrangement code | | | | | ---------------------Contact size | | | ------------------------Type code | ----------------------------Standard P/N
 B. P/N Characteristics
 (1) Temperature Minimum operating temperature is -55 deg.C (-67.00 deg.F) Maximum operating temperature is 125 deg.C (257.00 deg.F)
 C. Module Installation (Ref. Fig. 002)
 (1) Surface preparation
 (a) The module must be in direct contact with a bare metal surface.
 (b) Remove any insulating protective coatings (paint, anodizing, etc.) from the surfaces in contact as follows: - Strip the contact surfaces with a rotating metallic brush over a 13 mm (0.5118 in.) to 15 mm (0.5905 in.) area (with a pilot of diameter between 0.3 mm (0.0118 in.) and 0.5 mm (0.0196 in.) smaller than the hole diameter). - Remove dust and marks from the stripped part with a cloth soaked in solvent and wipe dry after cleaning. - Immediately after stripping, apply a small quantity of neutral vaseline (Material No.04-012) to the surface.

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R Grounding Module - Layout E0425 Figure 001

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R Grounding Module - Module Installation E0425 Figure 002

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 (2) Module installation - Install the module immediately after the previous operations. If you cannot install the module, do the surface preparation operations again. - TORQUE the module attachment screw to between 0.4 m.daN (35.3982 lbf.in) and 0.5 m.daN (44.2477 lbf.in) . - After you TORQUED the screw, remove any remaining vaseline.
 _________3. NSA937916
R R R  A. P/N Identification (Ref. Fig. 003) NSA937916-16 | | | -------------------Type code | -------------------------Standard P/N
R R R R  B. P/N Characteristics ---------------------------------------------------------------------------| TYPE CODE | NUMBER OF CONTACTS | CONTACT SIZE | |-------------------------------------------------------------------------| | 16 | 8 | 16 | |-------------------------------------------------------------------------| | 20 | 10 | 20 | ---------------------------------------------------------------------------
C. Module Installation (Ref. Fig. 004)
 ________________4. Connection Table (Ref. Fig. 005)

R Grounding Module - Layout and Contact Arrangement R NSA937916 R Figure 003

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R Grounding Module - Installation on Support NSA937915 R NSA937916 R Figure 004

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R Grounding Module - Connection Table Figure 005

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 __________________________________________________________
MISCELLANEOUS ELECTRICAL ITEMS - DESCRIPTION AND OPERATION
 _______1. General This section gives the description of the miscellaneous electrical items installed on aircraft.
 ________________________2. Structure of the chapter 
R R  A. Illuminated Pushbutton Switches and Annunciator Lights (Ref. 20-45-10) 
R  B. Switches (Ref. 20-45-20) 
R  C. Miscellaneous Items (Ref. 20-45-90).

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R R  ______________________________________________________ILLUMINATED PUSHBUTTON SWITCHES AND ANNUNCIATOR LIGHTS _________________________DESCRIPTION AND OPERATION
R R  _______1. General This chapter gives the description and Part Numbers of the Illuminated Pushbutton Switches and Annunciator lights used on aircraft :
 ________________________2. Structure of the Chapter
　
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